New 1.6 and two-litre diesel engines for Toyota Motor Europe’s revised Auris [Corolla] and Avensis model lines, launched at the Geneva show last week, are supplied by BMW, just-auto has learned.
“Yes, the new 1.6 diesel is sourced from BMW, as is the 2.0 D in Avensis,” a Toyota GB spokesman confirmed by email.
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The Japanese automaker first tapped the German firm for diesels in 2013 when a BMW 1.6 either replaced or supplemented Toyota’s own two-litre unit in some versions of the Verso MPV/minivan according to market. Here in the UK, the 1.6 completely replaced the two-litre.
Now, much the same is happening with the Auris and Avensis.
A new BMW 1,598cc turbo diesel is making its first appearance in the Auris range, replacing a two-litre unit branded ‘D-4D’ that has been available in some European markets.
It develops 110bhp and maximum torque of 270Nm between 1,750 and 2,250rpm. This accelerates the Auris 1.6 D-4D hatch from 0–62mph in 10.5 seconds and on to a top speed of 118mph.
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By GlobalDataCO2 emissions are lower than the outgoing 2.0 D-4D at 104g/km. Average fuel consumption is 68.9mpg. Cost of ownership is further reduced by new, extended servicing intervals, TME said.
The BMW engine supplements the Toyota 1,364cc D-4D turbodiesel upgraded in the latest Auris to comply with Euro 6 regulations.
Other changes to this motor, to improve performance and reduce emissions, include a new turbocharger which reduces friction in the turbine shaft by 20% and improves efficiency to generate a higher boost pressure at low engine speeds.
The engine has a new solenoid fuel injection system with a larger supply pump and higher common rail injection pressure (180mpa). A NOx storage reduction (NSR) catalyst has been adopted within the exhaust system to meet the Euro 6 requirement for a 55% reduction in Nox.
A new piston design with an open chamber combustion bowl improves fuel economy by 3.4%. The new pistons feature a diamond-like carbon coating which reduces friction and thus supports lower fuel consumption.
A new plastic cylinder head cover reduces component weight by 40% and offers improvements to both camshaft lubrication and oil capture performance.
The engine develops 89bhp. The breadth of torque generation has been expanded 400rpm lower down the rev range with a maximum 205Nm now available from 1,400rpm to 2,800rpm. The Auris 1.4 D-4D hatchback will accelerate from rest to 62mph in 12.5 seconds and reach a maximum speed of 112mph.
Toyota also introduced a new, in-house, 1.2-litre turbocharged petrol engine with the Auris update, replacing an older 1.6.
The second facelift of the Avensis, meanwhile, introduces new 1.6 and two-litre BMW diesels to the range.
Both are branded ‘D-4D’ and the two-litre version is new to Toyota.
The 1.6 emits 108g/km of CO2, 11g/km less than the two-litre it replaces. The new BMW two-litre diesel’s 119g/km is a 24g/km reduction compared with the outgoing Toyota 2.2-litre unit.
An increase in service intervals to 12,000 miles (20,000km) and a reduction of about 20% in the 90,000km/three-year servicing costs for both units have helped make the diesels cheaper to run, TME claimed.
BMW’s 1.6 replaces a Toyota two-litre unit, is Euro 6-compliant, and with a six-speed manual transmission, is 20kg lighter than its predecessor. It develops 110bhp at 4,000rpm and 270Nm of torque from 1,750 to 2,250rpm. This gives 0 – 62mph acceleration in 11.4 seconds and a top speed of 112mph.
The engine achieves an 8% improvement in fuel efficiency compared to the previous 2.0 with combined cycle fuel consumption of 68.9mpg.
The new Euro 6-compliant two-litre BMW D-4D has been tuned for a stronger focus on performance.
It develops a maximum 141bhp at 4,000rpm and 320Nm of torque from 1,750 to 2,500rpm. TME said its linear torque build-up and willingness to rev gives it particularly strong in-gear responsiveness and acceleration: it will move the car from rest to 62mph in 9.5 seconds and reach a top speed of 124mph.
Stop and start technology, coupled with a tall sixth gear for motorway cruising, help the engine return average fuel consumption of 62.8mpg.
Additional reporting: Glenn Brooks
