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BorgWarner Inc.

Automotive Components & Propulsion SystemsFounded 1928
Reviewed by Swet Parvadiya
Company data updated: October 2026

Acquisitions

BorgWarner Acquisitions

9

Major Deals Covered

$5.8B

Disclosed Deal Value

What are BorgWarner's biggest acquisitions?

BorgWarner's largest disclosed acquisition here is Delphi Technologies for $3.3B in 2020. This page covers 9 major deals from 1998 to 2023, each with its price where disclosed and the reason behind it.

Major deals covered
9
Largest deal
Delphi Technologies ($3.3B)
First deal
1998
Most recent
2023
CompanyYearPricePurpose
Eldor Corporation Electric Hybrid Systems business2023$82.0MBorgWarner bought the electric hybrid systems segment of Italy's Eldor for about EUR 75 million (about $82 million) at closing plus a possible earnout, adding power-electronics products for hybrid and electric vehicles.
Rhombus Energy Solutions2022$185.0MBorgWarner bought San Diego-based Rhombus, a maker of DC fast chargers and charging software for fleets, paying about $130 million at closing with up to $55 million more in contingent payments.
Santroll Automotive Components (light vehicle eMotor business)2022$220.0MBorgWarner bought the carved-out light vehicle e-motor business of China's Santroll for up to $195 million (RMB 1.4 billion) (~$153 million (RMB 1.1 billion) at closing plus an earnout of up to $41.7 million (RMB 0.3 billion)), completing the deal on April 1, 2022.
AKASOL AG2021$880.0MBorgWarner offered EUR 120 per share for German battery-system maker AKASOL, a deal reported at about $880 million for all shares. In June 2021 it paid about $732 million (EUR 648 million) to acquire 89.08% through the tender offer.
Delphi Technologies2020$3.3BAnnounced in January 2020 as an all-stock deal valued at about $3.3 billion, the acquisition added power electronics, software and calibration capabilities plus fuel-injection and aftermarket businesses.
Rinehart Motion Systems and AM Racing2019UndisclosedTwo small purchases that added high-performance inverter and electric-motor engineering for electric propulsion.
Sevcon2017$200.0MBorgWarner bought Sevcon, a maker of motor controllers and power electronics for electric vehicles, for about $200 million.
Remy International2015$950.0MBorgWarner paid $29.50 per share in cash, about $950 million of equity value, for Remy, a maker of electric motors, starters and alternators.
Kühnle, Kopp & Kausch (KKK)1998UndisclosedBorgWarner entered turbochargers by buying German turbocharger maker KKK, renamed 3K-Warner Turbosystems, and added Kuhlman Corporation's Schwitzer diesel turbo unit in 1999.
What companies has BorgWarner bought?
Major acquisitions by BorgWarner documented here include Delphi Technologies (2020), Remy International (2015), AKASOL AG (2021), Santroll Automotive Components (light vehicle eMotor business) (2022) and Sevcon (2017).
What is BorgWarner's most recent acquisition?
The most recent BorgWarner acquisition documented here is Eldor Corporation Electric Hybrid Systems business, in 2023, for $82M.

Eldor Corporation Electric Hybrid Systems business

2023

$82M

Why

BorgWarner bought the electric hybrid systems segment of Italy's Eldor for about EUR 75 million (about $82 million) at closing plus a possible earnout, adding power-electronics products for hybrid and electric vehicles.

Impact

The business was folded into PowerDrive Systems. In 2024 BorgWarner recorded a loss of about $15 million settling a commercial contract it had assumed in the deal.

Outcome

A small bolt-on that broadened BorgWarner's hybrid electronics portfolio.

Source →

Rhombus Energy Solutions

2022

$185M

Why

BorgWarner bought San Diego-based Rhombus, a maker of DC fast chargers and charging software for fleets, paying about $130 million at closing with up to $55 million more in contingent payments.

Impact

Rhombus became the core of BorgWarner's EV charging business inside the Battery & Charging Systems segment.

Outcome

BorgWarner decided to exit charging in February 2025 and stopped production in the second quarter of 2025, recording exit costs.

Source →

Santroll Automotive Components (light vehicle eMotor business)

2022

$220M

Why

BorgWarner bought the carved-out light vehicle e-motor business of China's Santroll for up to $195 million (RMB 1.4 billion) (~$153 million (RMB 1.1 billion) at closing plus an earnout of up to $41.7 million (RMB 0.3 billion)), completing the deal on April 1, 2022.

Impact

Added nearly 400 employees, e-motor manufacturing and automation know-how, and relationships with Chinese automakers.

Outcome

Strengthened BorgWarner's vertical integration in e-motors for the Chinese market.

Source →

AKASOL AG

2021

$880M

Why

BorgWarner offered EUR 120 per share for German battery-system maker AKASOL, a deal reported at about $880 million for all shares. In June 2021 it paid about $732 million (EUR 648 million) to acquire 89.08% through the tender offer.

Impact

AKASOL gave BorgWarner battery packs for buses, trucks and off-highway equipment and became the base of its battery segment.

Outcome

Battery demand fell short of plan: BorgWarner wrote down $423 million of battery goodwill in 2025 and expects battery sales to drop by about $250 million in 2026.

Source →

Delphi Technologies

2020

$3.3B

Why

Announced in January 2020 as an all-stock deal valued at about $3.3 billion, the acquisition added power electronics, software and calibration capabilities plus fuel-injection and aftermarket businesses.

Impact

During the pandemic the terms were renegotiated, cutting the exchange ratio 5% to 0.4307 BorgWarner shares per Delphi share. The deal closed on October 2, 2020.

Outcome

Delphi's power electronics now underpin BorgWarner's inverter business, while its fuel systems and aftermarket units were spun off as PHINIA in 2023.

Source →

Rinehart Motion Systems and AM Racing

2019

Why

Two small purchases that added high-performance inverter and electric-motor engineering for electric propulsion.

Impact

The technology fed into BorgWarner's inverter and e-motor development for passenger and commercial vehicles.

Outcome

Absorbed into what is now the PowerDrive Systems segment.

Source →

Sevcon

2017

$200M

Why

BorgWarner bought Sevcon, a maker of motor controllers and power electronics for electric vehicles, for about $200 million.

Impact

Added motor-control software and power-electronics design skills to the e-motor business built on Remy.

Outcome

Sevcon's know-how was integrated into BorgWarner's inverter development.

Source →

Remy International

2015

$950M

Why

BorgWarner paid $29.50 per share in cash, about $950 million of equity value, for Remy, a maker of electric motors, starters and alternators.

Impact

Remy was combined with TorqTransfer Systems to form what became PowerDrive Systems, BorgWarner's first large electric-machine business.

Outcome

Remy's motor expertise is the foundation of the e-motors and integrated drive modules that contribute to BorgWarner's $2.6 billion of 2025 eProduct revenue.

Source →

Kühnle, Kopp & Kausch (KKK)

1998

Why

BorgWarner entered turbochargers by buying German turbocharger maker KKK, renamed 3K-Warner Turbosystems, and added Kuhlman Corporation's Schwitzer diesel turbo unit in 1999.

Impact

Turbochargers grew into the center of today's Turbos & Thermal Technologies segment.

Outcome

Arguably BorgWarner's most important acquisition: the turbo business still generates a large share of company profit.

Source →

BorgWarner Inc.'s Growth & Acquisition Strategy

BorgWarner's strategy has narrowed since 2021. The original Charging Forward plan aimed to lift electric-vehicle revenue from under 3% of sales to about 45% by 2030, funded by acquisitions (Delphi Technologies in 2020, AKASOL in 2021, Santroll's e-motor business and Rhombus Energy Solutions in 2022) and by spinning off fuel systems and aftermarket as PHINIA in 2023. With eProducts at about $2.6 billion, or 18% of 2025 sales, the company now describes a balanced portfolio: keep investing in eProducts that can earn a return, protect the cash-generating Foundational products, and exit what does not work, as it did with EV charging in 2025. The newest leg is industrial and data center power, where it plans higher 2026 R&D spending to prepare the turbine generator and related products.

How BorgWarner Inc. Makes Money

BorgWarner is a Tier 1 supplier. It engineers components to an automaker's specification, wins a production award for a vehicle program, and then earns revenue on every unit built over the program's life, often five years or more. Most sales go to makers of light vehicles, with the rest to commercial-vehicle and off-highway manufacturers and other Tier 1 suppliers. In FY2025 Turbos & Thermal Technologies sold $5.77 billion and Drivetrain & Morse Systems $5.65 billion; together they produced $1.92 billion of segment adjusted operating income. PowerDrive Systems (e-motors, inverters and integrated drive modules) sold $2.35 billion but posted an $83 million segment adjusted operating loss, and Battery & Charging Systems sold $590 million at a $39 million loss. Volkswagen accounted for about 13% of net sales and Ford about 12%; no other customer exceeded 10%.

BorgWarner Acquisitions FAQ

What is BorgWarner's largest acquisition?

Delphi Technologies, announced in January 2020 as an all-stock deal valued at about $3.3 billion. The terms were cut to 0.4307 BorgWarner shares per Delphi share during the pandemic, and the deal closed on October 2, 2020.

When did BorgWarner buy Remy International?

BorgWarner bought Remy International in 2015 for $29.50 per share in cash, about $950 million of equity value, adding electric motors, starters and alternators.

How much did BorgWarner pay for AKASOL?

BorgWarner offered EUR 120 per share for AKASOL in February 2021 and in June 2021 paid about $732 million (EUR 648 million) to acquire 89.08% of the shares.

What did BorgWarner buy in China?

On April 1, 2022 BorgWarner completed its purchase of Santroll's light vehicle e-motor business for up to $195 million (RMB 1.4 billion), including an earnout of up to $41.7 million (RMB 0.3 billion).

What happened to the Rhombus Energy Solutions acquisition?

BorgWarner bought EV charger maker Rhombus in 2022 for about $130 million at closing plus up to $55 million in contingent payments. It decided to exit the charging business in February 2025.

What other acquisitions has BorgWarner made?

Other deals include KKK turbochargers (1998), a majority of BERU (2005), Sevcon (2017), Rinehart Motion Systems and AM Racing (2019) and Eldor's electric hybrid systems business (2023, about $84.7 million (EUR 75 million) at closing).

What companies has BorgWarner acquired?

To rapidly accelerate its EV pivot, BorgWarner famously executed a massive $3.3 billion acquisition of Delphi Technologies, and later acquired AKASOL to dominate commercial vehicle battery systems.

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Content is for informational purposes only. Not financial advice. Data sourced from SEC filings, annual reports, and public records. See our full disclaimer and methodology.